引射式烟囱研究及其在蒸汽过热系统中的应用  

Ejection Chimney Research and Application in the Steam Superheating System

作　　者：徐迎超[1] 樊泳[1] 周玉磊[1] 孙东生[2] 

机构地区：[1]北京首钢国际工程技术有限公司,北京100043 [2]首钢迁安钢铁有限责任公司,迁安064404

出　　处：《工程与技术》2012年第1期50-53,共4页

摘　　要：引射器在各个行业广为应用，是比较成熟的理论，但在烟囱领域却应用较少。由于蒸汽过热系统不设引风机，所以只有依靠烟囱高度来提高烟囱抽力，从而将蒸汽过热器设备燃烧室压力控制在-10Pa。自然通风烟囱高度45m时，才能满足燃烧室压力-10Pa的要求，而45m高烟囱的固定和支撑存在很大问题。所以采用引射式烟囱，既可满足燃烧室压力-10Pa，也可将烟囱高度设计为22m，同时降低了投资成本。Ejector in various industries are widely used, and is a relatively mature theory, but rarely applied in chimney. As there is not induced draft fan in the steam superheating system, so improved the chimney pumping force by the chimney height, in order to control steam superheater combustion chamber pressure in - 10 Pa. When natural ventilation chimney height is 45 m, can satisfy the combustion chamber pressure - 10 Pa, but fixed 45 m high chimney is serions problem. The ejection chimney not only satisfy the combustion chamber pressure - 10 Pa, also design chimney height is 22 m, while reducing the cost of investment.

关 键 词：引射式烟囱 蒸汽过热系统 烟囱 蒸汽过热器 

分 类 号：TU271.1[建筑科学—建筑设计及理论]